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/*
* Copyright (C) 2022 Metrological Group B.V.
* Copyright (C) 2022 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(WEBGL) && USE(ANGLE)
#include "GraphicsContextGLANGLE.h"
#include "ANGLEHeaders.h"
#include "GraphicsContextGLFallback.h"
#include "GraphicsContextGLGBMTextureMapper.h"
#include "PixelBuffer.h"
#include "PlatformDisplay.h"
namespace WebCore {
#if USE(EGL)
static inline bool isDMABufSupportedByNativePlatform(const PlatformDisplay::EGLExtensions& eglExtensions)
{
return eglExtensions.KHR_image_base && eglExtensions.EXT_image_dma_buf_import;
}
#endif
RefPtr<GraphicsContextGL> createWebProcessGraphicsContextGL(const GraphicsContextGLAttributes& attributes)
{
#if USE(TEXTURE_MAPPER_DMABUF) && USE(EGL)
if (isDMABufSupportedByNativePlatform(PlatformDisplay::sharedDisplayForCompositing().eglExtensions())) {
auto context = GraphicsContextGLGBMTextureMapper::create(GraphicsContextGLAttributes(attributes));
if (context)
return context;
}
#endif
return GraphicsContextGLFallback::create(GraphicsContextGLAttributes(attributes));
}
GraphicsContextGLANGLE::GraphicsContextGLANGLE(GraphicsContextGLAttributes attributes)
: GraphicsContextGL(attributes)
{
}
GraphicsContextGLANGLE::~GraphicsContextGLANGLE()
{
bool success = makeContextCurrent();
ASSERT_UNUSED(success, success);
if (m_texture)
GL_DeleteTextures(1, &m_texture);
auto attributes = contextAttributes();
if (attributes.antialias) {
GL_DeleteRenderbuffers(1, &m_multisampleColorBuffer);
if (attributes.stencil || attributes.depth)
GL_DeleteRenderbuffers(1, &m_multisampleDepthStencilBuffer);
GL_DeleteFramebuffers(1, &m_multisampleFBO);
} else if (attributes.stencil || attributes.depth) {
if (m_depthStencilBuffer)
GL_DeleteRenderbuffers(1, &m_depthStencilBuffer);
}
GL_DeleteFramebuffers(1, &m_fbo);
}
GCGLDisplay GraphicsContextGLANGLE::platformDisplay() const
{
return m_displayObj;
}
GCGLConfig GraphicsContextGLANGLE::platformConfig() const
{
return m_configObj;
}
void GraphicsContextGLANGLE::checkGPUStatus()
{
}
void GraphicsContextGLANGLE::platformReleaseThreadResources()
{
}
RefPtr<PixelBuffer> GraphicsContextGLANGLE::readCompositedResults()
{
return readRenderingResults();
}
bool GraphicsContextGLANGLE::makeContextCurrent()
{
static thread_local TLS_MODEL_INITIAL_EXEC GraphicsContextGLANGLE* s_currentContext { nullptr };
if (s_currentContext == this)
return true;
bool current = !!EGL_MakeCurrent(m_displayObj, EGL_NO_SURFACE, EGL_NO_SURFACE, m_contextObj);
if (current)
s_currentContext = this;
return current;
}
} // namespace WebCore
#endif // ENABLE(WEBGL) && USE(ANGLE)
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